Road-roller.



c. F. HINMAN.

noAn MILLER.

(Appiicazionmed -sepew 22, 1891.)

Patented May` 8, |900. v

(No Model.)

witwassen@ i UNITED STATES PATENT ,EEIcEa CLEMENT E. I-IINMAN, or PITTSBURG, PENNSYLVANIA.

- ROAD-ROLLER.

SPECIFICATION forming para of Letters Patent No. 649,423, dated 4May s, 1900. Application led September 22J 1897. Serial No. 652,667. v(No model.)

'ro a type of road-roller known as the reversible horse-roller, usually consisting of rollers arranged in a frame or other support and a swinging draft arm or sweep pivotally attached in such a manner that the team may I 5 be turned about the machine to reverse the direction of, travel without turning the rolls or framework around. Rollers of this class have heretofore vbeen made with one or more rolls on a single axle inclosed within a frame,

zo with various devices kfor connecting the draft to the frame rand changing the direction of travel. One of the serious objections to rollers of this class as heretofore constructed is that in having a single axle for supporting z5 the frame the 'frame depends for'its maintenance in a level position upon the tongue or other draft connection, the outer end of which issupported by the necks of the draft-animals, so that incase a brake is applied to the 3o rolls the tendency of the rolls to turn causes a downward pressure on the frame and tongue, and consequently subjects-the draft-animals to unnecessary burden and inconvenience, as .well as jeopardizing their safety. Another se- 3 5 rions objection to such type of rollers as yheretofore `constructed is that, the entire roller being on a single axial line, the extreme ends of the roller may rest onl the solid portions of the road-bed, and thus prevent the interme- 40 diate rolls or portion of the rolls from bearing upon any soft or less-compact portions thereunder, and as a consequence the harder or denser portions would receive eXtreme compression, while the softer portions would es- 4 5 .cape sufficient pressure to prod nce proper density. A still furtherobjection to the prior construction is the diiiiculty of turning such rollers around when driven about the streets or roads.

5o My invention is designed to overcome these and other defects hereinafter explained; and it has for one of its objects to make a roller which shall have a maximum width of track, as heretofore, and at the same time provide for a uniform degree ofcompression of the road-bed throughout the entire area of such track notwithstanding the variations in the initial density of the road-bed or the irregularities in its surface. 'A

Another object of my invention is to provide a horizontal pivotalconnection of the tongue or pole where it connects with the reversible sweep, which" establishes draftgconnection with the draft-points at either end of the roller. 'p

A further object of my invention is to providea construction of rollerin which the brake may be applied without bearing down upon the draft attachment; and a still furtherobject is to provide a tricycle form of roller .which may be readily turnedin a small radius.v

other objects hereinafter appearing are attained, all as fully described with reference to the accompanying drawings and more particularly pointed out in the claims. In the said drawings, Figure lis a plan View of my improved roller, showing the operators platform and draft-sweep removed. Fig.2 is a side elevation thereof, showing the operators platform and draft-sweep in position' Fig. 3 is a detail plan view of the operators platform and the means whereby the draftsweep is pivoted thereto. Fig. 4 is a transverse sectional view thereof.V Fig. 5 isavertical transverse sectional view of the operators platform, showing the brake mechanism and a portion of one of the rear rolls; and Fig. 6 is a detail side elevation of one of the draftsweeps.

In carrying out my invention I employ three rolls l 2 3, which are arranged in overlapping track and preferably one at each corner of a triangle or in what might be termed tripod or tricycle fashion, the paired rolls 1 and 2 being located at a considerable distance apart and the single roll 3 being arranged in line with the space between the pair 1 Zand being preferably of sufficient width to partly overlap each ofthe tracks of the rollsl and 2s'o. that the maximum width of road-'bed af." l!

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a gllsdlf'y the sum of the three rolls will lnformly compressed without seam. The

roll 3 is preferably independent of the nolls 1 and 2, so as to be capable of vertical movement, whereby it may sink into any depressions should there be such in the road-bed spanned by the rolls 1 and 2 or may rise over unyielding surfaces, stones, or lumps, while either or both of thevrolls 1 2 sink into depres sions or into the more yielding portions of the road-bed on either side of the track of the roll 3, thus compressing the entire area traversed by the three rolls with a substantiallyuniform density notwithstanding any irregularities in the surface of the road-bed or in its density'which might have existed prior to the passagel of the roller thereover. 3 is also preferably connected to the other two by a joint or connection capable of lateral deiectiomso that the roller maybe turned around in a comparatively-small radius when driving along ,the roads -or around street corners. With a view to accomplishing these ends I mount the rolls 1 and 2 upon a com- 1 mon shaft or axle 4,' each end of which is journaled in a box 5, formed on or secured to a This frame which extends around the rolls.

'iframe preferably consists of two members, the

lowerone, A6 being joined to the upper one, 7, by suitable bolts or other devices 8, and the members 6 7 being each provided with one sectionofeachbox 5. The member 6 extends downwardly and then across the faces of the rolls Land 2, while the member 7 extends upwardly and across in a similar manner, thus forming what might be called a fork on each side. The cross-bars of the member- 6 at a point intermediate the rolls 1 and 2 is after described.

providedwi'th a perforated lug 9, and at a great distance above thislug `9 the cross-bar of the member 7 is provided with a perforated lug 10, which is enlarged -so as to constitute a table for supporting superposed parts herein- The roll 3 is surrounded by a frame composed of two members 11 12, similar to the members 6 7, each being provided with one member of a journal-box 13, surrounding the shaft or axle of the roll 3. The

member 11 where it crosses the face ofthe roll 3 and at a point just above the lug 9 is provided wth a perforated lug 14, whose perforation coincides with that in the ldg 9, while themember 12 immediately above the lug 14 isprovided with a similar lug 15, havinga perforation coinciding with the perforation in the table or lug 10, and passing downwardly through these four lugs and coupling the fore and aft rolls together is a king-bolt 16; The

- I nember 12 of the frame surrounding the roll l 3 is carried forwardly or around the outer face of such roll and is there'provided with a. draft attachment 17, which will be presently described more in detai1,while arranged p between the two rolls 1 and 2 andjournal'ed upon or otherwise secured to the shaft or axle 4 isl a draft attachment 18, which projects rearwardly beyondthe peripheries of the rolls The roll `bolt 16, is a brake-wheel shaft 21, to whose lower end is secured a chain or other connection 22, which is .also attached to a brake.

lever 23, pivoted to the upper end of the draft attachment 18 and carrying a brake-shoe,

bearing against one-of the rolls 1 2, the brakeshoe being held normally out of enga-gement byaspring24orothersuitable means. Above the'plat'form' 19t-he brake-wheel' sha-ft 21 is Aprovided with a ratchet 25,- and secured to the platform is a pawl 26 in position tobe conveniently operatedby the foot of the operator. l

Supported upon the platform 19 is aring 27, pivotally held in place bya number of angle-irous 28secured to the platform- 19v and overlapping the inneredge of the ring. To

one side of this ring is secu-red the outer end of the draft sweep or arm 29, while upon the other side is supported the operator-s seat 30. Thus when thedraft-sweep 29 is turned about ,I the position 'of the seatf30 isa'lso changed, while the brake-Wheel remains always convenient to the hand of the operator. The lower end of the draft-sweep 29 is turned downwardly and provided with anyy suitable f connectioni 31,'whereby it may be secured to the ltongue or other device (not shown) to which the' draft-animals are hitched. This end of the draft-sweep is also provided' with va flange 32,which engages under either of the draft connections 17 18, according to the direction in which the roller is driven, and with a lug 33, which engages in a notch 34, formed in each of the draft connections 17 18, the flange 32 holding the draft-sweep from 4upward movement, while the lug 33 imparts the direct pull to the draft connection 17 or 18. The draft-sweep 29 is held against accidental lateral movement by means of a latch 35, pivoted to the end of the draft-sweepand passing through a suitable passage therein, so as to engage in a socket 36, formed in each of the draft connections 17 18. This latch 35 may be operated from the seat of the operator by means of a pull-rod 37, having a loop passing around the brake-wheel shaft 21, as shown in Fig. -2.

Witha roller th us constructed it will'be seen that the two draft attachments 17 18 being in line with the king-bolt, which connects the fore and aft rolls together, the roller may be driven in either direction and the rear roll or rolls will follow the forward ones Without the aid of any other guide or steering mechanism, and-by virtue of this pivotal connection between the fore and aft rolls the roller maybe I-oo . turned'in a'comparatively-small radius and Without danger of'injuring the pivotal connection between the rolls, inasmuch as the o perforated. lugs which connect their frames 5 together are located at a great distance apart,

, and thereby insure against independent tipping action of the rolls. AIt will also be seen that the pressure of the brake upon the frame of the roller cannot in any manner depress io the draft attachments `or endanger'the draftn 1. animals, fas heretofore. This desirable rel. sult Yis also due to the great distance between the `pointsat top and bottom at which the two independent frames of the rolls are piv- I`5 .oted together, for it is readily seen that the 'L applicationv .of a brake to either the fore or aft, rollscould not strain such pivotal connecconnection. 4Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is 4.

f1; Aroller having in combination fore and. aft rolls; in'd'ep'endent frames, for said rolls Are spectively,' eachhavin g 'ajdraft 'con-n ection at one endand their contiguous ends "being pivotd together on a vertical axis extending j between. the peripheries of the"- fore and aft rolls and in line withjsaid draft connections,

thfe bearings of said verticalpivot'being con- L siderably elongated,l above andbelowfthe ley. s of therolle'r-axes, substantially asset' fort f Y l2;`A A roller having in combination fore and aft'rollsfindependent frames, for said rolls, pivotedgtogether on va vertical axis between the'rolls; a' brake''-lever secured to one of said rames and hav-in-gashoetbearing against one "f saidgollsyla verticallshaft having rotatable nncctio'n.with 'the-same frame and a chain connecting said shaft and lever, substantially asset forth. A '3. A roller havingincombination fore and aft' rolls each having a frame, an elongated king-bolt connecting said frames together, a draft connection projecting fronreach of said frames, a draft-sweep pivoted concentrically with said king-bolt and adapted to` connectv l with either of said draft connections, brake fand a brake-operating shaft arranged-\ concentrically with said king-bolt, substantially `as set forth.

- 41:" A roller having in combination fore and 4.5.5 aft rolls journaled on different axes, a draft z' normally-horizontal position of either draft tion .with its greatly-extended vertical bear- ,f ing-sufciently. to vappreciably disturb the.

lugs,

said platform and adapted to connection projecting from each of said axes and adraft-sweep pivoted between said axes and adapted to swing from one draftconnection to the other, substantially as set forth.

5. A roller having in combination fore and aft rolls, a draft connection projecting from each of said rolls, a draft-sweep pivoted between said rolls and having its end. turned E down to engage with either of said draft con substantially as set forth.

' nections, and a latch on said. downturnedfendjfgf 'I of the draft-sweep for locking it in posit-ion;` u

6. A roller having in combination fore andi.,l f

aft rolls, a draft connection projecting joutwardly from each of said rolls and having'the notch 34, a draft-sweep pivoted between said rolls and having the flange 32 and lug 33, and a latch 35, substantially as set forth.

7. A roller having in combination fore and i.' aft rolls,'an independent frame in which said rolls arejournaled" respectively and each frame having widely-separated verticallyalined lugs', a king-bolt passing thronghsaid i and pivoting said frames togetheron ai vertical axis,vand a draft connection for said 8 roller, substantially as setforth.

8.v A roller having in combination thev 11pwardly-projecting frame member 6, the upwardly-proj ectin g frame member12,the downwardly-projecting frame member 11, a perfo- 4 ratedlugfon each of said frame members arn gc'edf lerti'cal alineme'nt, a king-bolt passv 1 .lr-said lugs, a draft attachment connected toone of said frames, and the rolls 9 journaled in said frames respectively, substantially as set forth. v-

9. A rollerhaving in combination fore and aft rolls, an independent frame in which said rolls are journaled respectively, and each of said frames having vertically-alined widelyseparated lugs, a king-bolt passing through said lugs, the draft attachment 18 secured to one of said lugs and`being supported by the axle of one set of the rolls, a draft attachment 1 projecting from the other of said frames, the platform 19 supported upon one of said lugs and a draft-sweep pivotally supported upon. Y connect with. either of said draft connections, substantially 1 CLEMENT F. I-IINMAN.

`as set forth'.

Witnesses:

ARTHUR R. DURKEE, I-I. l-I. ROBINSON.

-wardly-projecting frame member 7, the down- 

